Belgium’s PV Growth Slows Down, Residential and C&I Remain Strongest Segments

Name: Yearly Installed PV Capacity Belgium
Creator: Flemish Energy and Climate Agency, Brussels Regulatory Authority, energie commune

Values in MWdc.

	Residential (≤20 kW)	Small Commercial (>20 ≤100 kW)	Medium Commercial (>100 ≤500 kW)	Large Commercial-Small Industrial (>500 ≤1000 kW)	Medium-Large Industrial (>1000 ≤5000 kW)	Utility (>5000 kW)
2021	281	88	190	56	22	13
2022	924	55	80	31	32	18
2023	1740	158	277	92	65	40
2024	492	118	216	92	73	44
2025	369	83	171	86	69	41

Yearly Installed PV Capacity Belgium — Source: Flemish Energy and Climate Agency, Brussels Regulatory Authority, energie commune

While the growth trajectory of the Belgian PV market has slowed down after 2023, residential and C&I are clear drivers of its growth. The residential segment dominated the market in the past, the C&I segment is emerging as an additional driver. In 2025, ~45% was installed in the residential segment, ~50% was installed in the C&I segment and ~5% was installed in the utility segment.

Frequently asked questions

What was the market share of the residential, C&I, and utility segments in the Belgian PV market in 2025?

In 2025, the C&I (Commercial & Industrial) segment accounted for approximately 50% of new installations in the Belgian PV market, making it the largest segment. The residential segment followed with about 45% of installations, while the utility segment represented a smaller share of approximately 5%. This distribution highlights the strong performance of distributed generation in Belgium.

Which segments are the primary growth drivers for the Belgian PV market?

The residential and C&I (Commercial & Industrial) segments are the clear primary growth drivers for the Belgian PV market. While the residential segment historically dominated, the C&I segment is now emerging as an additional significant contributor to the market’s expansion. These two segments collectively represented approximately 95% of new PV installations in Belgium in 2025.

How has the growth trajectory of the Belgian PV market changed after 2023?

The growth trajectory of the Belgian PV market has slowed down after 2023. Despite this deceleration in overall market expansion, the residential and C&I segments continue to be strong drivers, collectively accounting for approximately 95% of new installations in 2025. This indicates a sustained demand within specific market niches even as the broader growth rate moderates.